In study NCT00582127, two age-matched cohorts (mild AD, n=98 and healthy controls, n=100) were recruited to 7 clinical sites to undergo a broad range of clinical, neuropsychological, and neuroelectrophysiological tests. The complete battery of ADNI neuropsychological tests were performed on the mild AD subjects as well as standard blood tests and MRI using the ADNI protocol. MRI volumetry analysis was performed on the MRI data. Both cohorts underwent a 3-minute EEG recording and event-related potential (ERP) testing using a standard 2-deviant auditory oddball paradigm with the COGNISION(tm) System from Neuronetrix. The study showed that specific EEG/ERP features could be used to discriminate the mild AD cohort from healthy controls.